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Tetra-methyl 1,1,2-triphenyl-2H-1λ-phosphole-2,3,4,5-tetra-carboxyl-ate.

ABSTRACT: The title compound, C(30)H(27)O(8)P (1), was formed as one of two products {(1) and (2) [Krawczyk et al. (2010 ▶). Acta Cryst. E66 (cv2753)]} in the reaction of dimethyl acetyl-enedicarboxyl-ate with triphenyl-phosphine. The mol-ecule of (1) consists of a five-membered ring, in which the P atom is incorporated. One of the phenyl groups of the triphenyl-phosphine migrated to a vicinal C atom during the reaction. The five-membered ring of (1) is corrugated [r.m.s. deviation = 0.0719 (8) Å], whereas that in compound (2) is planar, the r.m.s. deviation being only 0.009 (2) Å.

SUBMITTER: Krawczyk KK 

PROVIDER: S-EPMC3008977 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature

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Tetra-methyl 1,1,2-triphenyl-2H-1λ-phosphole-2,3,4,5-tetra-carboxyl-ate.

Krawczyk Krzysztof K KK   Wojtasiewicz Krystyna K   Maurin Jan K JK   Gronowska Ewa E   Czarnocki Zbigniew Z  

Acta crystallographica. Section E, Structure reports online 20101009 Pt 11

The title compound, C(30)H(27)O(8)P (1), was formed as one of two products {(1) and (2) [Krawczyk et al. (2010 ▶). Acta Cryst. E66 (cv2753)]} in the reaction of dimethyl acetyl-enedicarboxyl-ate with triphenyl-phosphine. The mol-ecule of (1) consists of a five-membered ring, in which the P atom is incorporated. One of the phenyl groups of the triphenyl-phosphine migrated to a vicinal C atom during the reaction. The five-membered ring of (1) is corrugated [r.m.s. deviation = 0.0719 (8) Å], wherea  ...[more]

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